Radioactivity in Some Aquatic Plants

Burkholder, Paul R.

doi:10.1038/198601a0

Cited by 4 publications

(1 citation statement)

References 3 publications

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“…Long-lived radioisotopes caught in stable waterways are likely accessible for the remainder of their actual half-lives for consolidation into aquatic ecosystem (flora and fauna) [9].…”

Section: Introductionmentioning

confidence: 99%

Radon Assessment in Ceratophyllum demersum Plant Samples

Ani

Amin

Alwan

2022

Iraqi Journal of Science

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The amount of radioactive isotopes in submerged Ceratophyllum demersum plants samples were estimated using passive track detector CR-39. The samples were collected from four selected sites along the Tigris River in Baghdad city, on a monthly basis for one complete year of 2019. Certain factors like radon concentration (Bq.m-3), radium content (Bq.kg-1) and uranium concentration (ppm) were evaluated. The average values of 222Rn level, 226Ra content and 238U concentration in Ceratophyllum demersum samples for site (1) were (593.1 Bq.m-3, 5.8 Bq.kg-1, 0.113 ppm), site (2) were (413.4 Bq.m-3, 3.8 Bq.kg-1, 0.074 ppm), Site (3) were (465.5 Bq.m-3, 4.3 Bq.kg-1, 0.083 ppm) and site (4) were (431.3 Bq.m-3, 3.9 Bq.kg-1, 0.077 ppm), respectively. The results obtained in this work indicated that the radium content and uranium concentration present in the Ceratophyllum demrsum is acceptable which does not pose any risk to the aquatic ecosystem.

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“…Long-lived radioisotopes caught in stable waterways are likely accessible for the remainder of their actual half-lives for consolidation into aquatic ecosystem (flora and fauna) [9].…”

Section: Introductionmentioning

confidence: 99%

Radon Assessment in Ceratophyllum demersum Plant Samples

Ani

Amin

Alwan

2022

Iraqi Journal of Science

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Selected Fluoropolymers (A Class of PFAS Polymers)

Dourson,

Lasee,

Onyema

2024

Patty's Toxicology

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This chapter is about a series of fluorinated polymers (fluoropolymers) which belong to a broad class of chemical substances referred to as per‐ and polyfluoroalkyl substances (PFAS). PFAS are a unique class of anthropogenic chemicals consisting of carbon and fluorine atoms joined by very strong bonds, resulting in high‐performance properties. The overall structure of these fluoropolymers is the covalent linkage of one or more monomers, at least one of which is generally short carbon chains with fluorine atoms substituting for hydrogen atoms. The resulting fluoropolymer is a much larger molecule with very different uses, kinetics, and potential toxicity than the constituent monomers. For example, fluoropolymers are generally not well‐absorbed, if at all, in biological systems, thus avoiding to a great degree of any untoward toxicity. Unlike the monomers, the resulting fluoropolymers are usually chemically stable, biologically inert and nonbioaccumulative, water and oil resistant, and useful for many industrial applications. Because the chemical structure of these fluoropolymers makes them generally biologically unreactive and chemically inert, the available epidemiology and toxicology literature is minimal. This chapter will review the literature on fluoropolymers but will also briefly discuss the toxicity of the constituent monomers. Afterward, a summary of estimates of potential human risk by various agencies will be described. For information and practical guidance on the use of terminology in regard to PFASs, readers are referred to the OECD PFAS Terminology report [OECD, Reconciling Terminology of the Universe of Per‐ and Polyfluoroalkyl Substances: Recommendations and Practical Guidance , OECD Series on Risk Management, No. 61, OECD Publishing, Paris, 2021. Available at https://www.oecd.org/chemicalsafety/portal‐perfluorinated‐chemicals/terminology‐per‐and‐polyfluoroalkyl‐substances.pdf . Accessed October 10, 2023).

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Hydrobiologie, Limnologie, Abwasser und Gewässerschutz

Jaag¹

1964

Bericht Über Das Jahr 1963

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Radioactivity in Some Aquatic Plants

Cited by 4 publications

References 3 publications

Radon Assessment in Ceratophyllum demersum Plant Samples

Radon Assessment in Ceratophyllum demersum Plant Samples

Selected Fluoropolymers (A Class of PFAS Polymers)

Hydrobiologie, Limnologie, Abwasser und Gewässerschutz

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